From: Wei Yang <richard.weiyang@gmail.com>
Subject: mm-vmscan-make-sure-wakeup_kswapd-with-managed-zone-v2

adjust the usage in migrate_balanced_pgdat()

Link: https://lkml.kernel.org/r/20220329010901.1654-2-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/migrate.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/migrate.c~mm-vmscan-make-sure-wakeup_kswapd-with-managed-zone-v2
+++ a/mm/migrate.c
@@ -1981,7 +1981,7 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid,
 #ifdef CONFIG_NUMA_BALANCING
 /*
  * Returns true if this is a safe migration target node for misplaced NUMA
- * pages. Currently it only checks the watermarks which crude
+ * pages. Currently it only checks the watermarks which is crude.
  */
 static bool migrate_balanced_pgdat(struct pglist_data *pgdat,
 				   unsigned long nr_migrate_pages)
@@ -1991,7 +1991,7 @@ static bool migrate_balanced_pgdat(struc
 	for (z = pgdat->nr_zones - 1; z >= 0; z--) {
 		struct zone *zone = pgdat->node_zones + z;
 
-		if (!populated_zone(zone))
+		if (!managed_zone(zone))
 			continue;
 
 		/* Avoid waking kswapd by allocating pages_to_migrate pages. */
_